Unknown Activitypub vulnerabilities

5 vulnerabilities

Known vulnerabilities in Unknown Activitypub, newest first, with CVSS severity, EPSS, KEV listings, ransomware use and the affected versions.

7.5CVE-2026-4338automatticactivitypub+2
EPSS score
0.44%
The ActivityPub WordPress plugin before 8.0.2 does not properly filter posts to be displayed, allowed unauthenticated users to access drafts/scheduled/pending posts6.4CVE-2023-5057automatticactivitypub+2
EPSS score
0.49%
The ActivityPub WordPress plugin before 1.0.0 does not escape user metadata before outputting them in mentions, which could allow users with a role of Contributor and above to perform Stored XSS attacks6.5CVE-2023-3707automatticactivitypub+2
EPSS score
0.57%
The ActivityPub WordPress plugin before 1.0.0 does not ensure that post contents to be displayed are public and belong to the plugin, allowing any authenticated user, such as subscriber to retrieve the content of arbitrary post (such as draft and private) via an IDOR vector. Password protected posts are not affected by this issue.4.3CVE-2023-3706automatticactivitypub+2
EPSS score
0.57%
The ActivityPub WordPress plugin before 1.0.0 does not ensure that post titles to be displayed are public and belong to the plugin, allowing any authenticated user, such as subscriber to retrieve the title of arbitrary post (such as draft and private) via an IDOR vector6.4CVE-2023-3746automatticactivitypub+2
EPSS score
0.50%
The ActivityPub WordPress plugin before 1.0.0 does not sanitize and escape some data from post content, which could allow contributor and above role to perform Stored Cross-Site Scripting attacks